using System.ComponentModel;
using System.Runtime.CompilerServices;
using System.Windows.Input;

namespace AgentWikiUi.Gui;

class ObservableObject : INotifyPropertyChanged
{
    public event PropertyChangedEventHandler? PropertyChanged;

    protected bool Set<T>(ref T field, T value, [CallerMemberName] string? name = null)
    {
        if (EqualityComparer<T>.Default.Equals(field, value)) return false;
        field = value;
        Raise(name);
        return true;
    }

    protected void Raise([CallerMemberName] string? name = null) => PropertyChanged?.Invoke(this, new(name));
}

class RelayCommand<T>(Action<T?> run, Func<bool>? canRun = null) : ICommand
{
    public event EventHandler? CanExecuteChanged;
    public bool CanExecute(object? parameter) => canRun?.Invoke() ?? true;
    public void Execute(object? parameter) => run(parameter is T t ? t : default);
    public void Refresh() => CanExecuteChanged?.Invoke(this, EventArgs.Empty);
}